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Finding the Fourth Proportional to 91,240.88, 125,903.42 and 50,953.78

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Solution

The fourth proportional to 91,240.88, 125,903.42 and 50,953.78 is: 70,311.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,240.88 : 125,903.42 = 50,953.78 : x
  2. Step 2: Convert to fraction form
    91,240.88/125,903.42 = 50,953.78/x
  3. Step 3: Cross multiply
    91,240.88x = 125,903.42 × 50,953.78
  4. Step 4: Simplify right side
    91,240.88x = 6,415,254,658.09
  5. Step 5: Solve for x
    x = 6,415,254,658.09/91,240.88
  6. Step 6: Final answer
    x = 70,311.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.